96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/*
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* This file is part of the libopenstm32 project.
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*
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* Copyright (C) 2010 Gareth McMullin <gareth@blacksphere.co.nz>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include <usb/usbd.h>
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#include "usb_private.h"
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struct _usbd_device _usbd_device;
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u8 usbd_control_buffer[128] __attribute__((weak));
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/**
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* Main initialization entry point.
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*
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* Initialize the USB firmware library to implement the USB device described
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* by the descriptors provided.
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*
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* It is required that the 48MHz USB clock is already available.
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*
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* @param dev Pointer to USB device descriptor. This must not be changed while
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* the device is in use.
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* @param conf Pointer to array of USB configuration descriptors. These must
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* not be changed while the device is in use. The length of this
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* array is determined by the bNumConfigurations field in the
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* device descriptor.
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* @param strings TODO
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* @return Zero on success (currently cannot fail).
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*/
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int usbd_init(const struct usb_device_descriptor *dev,
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const struct usb_config_descriptor *conf, const char **strings)
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{
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_usbd_device.desc = dev;
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_usbd_device.config = conf;
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_usbd_device.strings = strings;
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_usbd_device.ctrl_buf = usbd_control_buffer;
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_usbd_device.ctrl_buf_len = sizeof(usbd_control_buffer);
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_usbd_hw_init();
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_usbd_device.user_callback_ctr[0][USB_TRANSACTION_SETUP] =
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_usbd_control_setup;
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_usbd_device.user_callback_ctr[0][USB_TRANSACTION_OUT] =
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_usbd_control_out;
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_usbd_device.user_callback_ctr[0][USB_TRANSACTION_IN] =
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_usbd_control_in;
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return 0;
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}
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void usbd_register_reset_callback(void (*callback)(void))
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{
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_usbd_device.user_callback_reset = callback;
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}
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void usbd_register_suspend_callback(void (*callback)(void))
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{
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_usbd_device.user_callback_suspend = callback;
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}
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void usbd_register_resume_callback(void (*callback)(void))
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{
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_usbd_device.user_callback_resume = callback;
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}
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void usbd_set_control_buffer_size(u16 size)
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{
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_usbd_device.ctrl_buf_len = size;
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}
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void _usbd_reset(void)
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{
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_usbd_device.current_address = 0;
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_usbd_device.current_config = 0;
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usbd_ep_setup(0, USB_ENDPOINT_ATTR_CONTROL, 64, NULL);
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_usbd_hw_set_address(0);
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if (_usbd_device.user_callback_reset)
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_usbd_device.user_callback_reset();
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}
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